Making Plural Insulated Gate Field Effect Transistors Of Differing Electrical Characteristics Patents (Class 438/275)
  • Publication number: 20100285641
    Abstract: A mask read-only memory (ROM) device, which can stably output data, includes an on-cell and an off-cell. The on-cell includes an on-cell gate structure on a substrate and an on-cell junction structure within the substrate. The off-cell includes an off-cell gate structure on the substrate and an off-cell junction structure within the substrate. The on-cell gate structure includes an on-cell gate insulating film, an on-cell gate electrode and an on-cell gate spacer. The on-cell junction structure includes first and second on-cell ion implantation regions of a first polarity and third and fourth on-cell ion implantation regions of a second polarity. The off-cell gate structure includes an off-cell gate insulating film, an off-cell gate electrode and an off-cell gate spacer. The off-cell junction structure includes first and second off-cell ion implantation regions of the first polarity and a third off-cell ion implantation region of the second polarity.
    Type: Application
    Filed: July 14, 2010
    Publication date: November 11, 2010
    Inventors: Yong-Kyu Lee, Jeong-Uk Han, Hee-Seog Jeon, Young-Ho Kim, Myung-Jo Chun, Jung-Ho Moon
  • Patent number: 7829407
    Abstract: A semiconductor device including semiconductor material having a bend and a trench feature formed at the bend, and a gate structure at least partially disposed in the trench feature. A method of fabricating a semiconductor structure including forming a semiconductor material with a trench feature over a layer, forming a gate structure at least partially in the trench feature, and bending the semiconductor material such that stress is induced in the semiconductor material in an inversion channel region of the gate structure.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: November 9, 2010
    Assignee: International Business Machines Corporation
    Inventors: Brent A. Anderson, Andres Bryant, Edward J. Nowak
  • Patent number: 7824986
    Abstract: A method of forming a plurality of transistor gates having at least two different work functions includes forming first and second transistor gates over a substrate having different widths, with the first width being narrower than the second width. A material is deposited over the substrate including over the first and second gates. Within an etch chamber, the material is etched from over both the first and second gates to expose conductive material of the first gate and to reduce thickness of the material received over the second gate yet leave the second gate covered by the material. In situ within the etch chamber after the etching, the substrate is subjected to a plasma comprising a metal at a substrate temperature of at least 300° C. to diffuse said metal into the first gate to modify work function of the first gate as compared to work function of the second gate.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 2, 2010
    Assignee: Micron Technology, Inc.
    Inventors: Sandhu S. Gurtej, Mark Kiehlbauch
  • Patent number: 7824987
    Abstract: A semiconductor device including a SRAM section and a logic circuit section includes: a first n-type MIS transistor including a first n-type gate electrode formed with a first gate insulating film interposed on a first element formation region of a semiconductor substrate in the SRAM section; and a second n-type MIS transistor including a second n-type gate electrode formed with a second gate insulating film interposed on a second element formation region of the semiconductor substrate in the logic circuit section. A first impurity concentration of a first n-type impurity in the first n-type gate electrode is lower than a second impurity concentration of a second n-type impurity in the second n-type gate electrode.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: November 2, 2010
    Assignee: Panasonic Corporation
    Inventors: Tokuhiko Tamaki, Naoki Kotani, Shinji Takeoka
  • Patent number: 7824975
    Abstract: A method of fabricating a semiconductor device having a gate spacer layer with a uniform thickness wherein a gate electrode layer pattern is formed on a substrate and ion implantation processes of respectively different doses are formed on side walls of the gate electrode layer patterns in respective first and second regions of the substrate. A first gate spacer layer is formed on the gate electrode layer pattern where the ion implantation process is performed. A second gate spacer layer is formed on the first gate spacer layer.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: November 2, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Yong Soo Joung, Kyoung Bong Rouh, Hye Jin Seo
  • Patent number: 7820512
    Abstract: In general, in one aspect, a method includes forming a semiconductor substrate having N-diffusion and P-diffusion regions. A gate stack is formed over the semiconductor substrate. A gate electrode hard mask is formed over the gate stack. The gate electrode hard mask is augmented around pass gate transistors with a spacer material. The gate stack is etched using the augmented gate electrode hard mask to form the gate electrodes. The gate electrodes around the pass gate have a greater length than other gate electrodes.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: October 26, 2010
    Assignee: Intel Corporation
    Inventors: Ravi Pillarisetty, Suman Datta, Jack Kavalieros, Brian S. Doyle, Uday Shah
  • Publication number: 20100264481
    Abstract: Nonvolatile memory devices and methods of fabricating the same are provided. A semiconductor substrate is provided having a cell field region and a high-voltage field region. Device isolation films are provided on the substrate. The device isolation films define active regions of the substrate. A cell gate-insulation film and a cell gate-conductive film are provided on the cell field region of the substrate including the device isolation films. A high-voltage gate-insulation film and a high-voltage gate-conductive film are provided on the high-voltage field region of the substrate including the device isolation films. The device isolation film on the high-voltage field region of the substrate is at least partially recessed to provide a groove therein.
    Type: Application
    Filed: June 30, 2010
    Publication date: October 21, 2010
    Inventors: Yoo-Cheol Shin, Jung-Dal Choi
  • Publication number: 20100267212
    Abstract: Semiconductor devices can be fabricated using conventional designs and process but including specialized structures to reduce or eliminate detrimental effects caused by various forms of radiation. Such semiconductor devices can include one or more parasitic isolation devices and/or buried layer structures disclosed in the present application. The introduction of design and/or process steps to accommodate these novel structures is compatible with conventional CMOS fabrication processes, and can therefore be accomplished at relatively low cost and with relative simplicity.
    Type: Application
    Filed: November 30, 2009
    Publication date: October 21, 2010
    Inventor: Wesley H. Morris
  • Patent number: 7816211
    Abstract: A semiconductor device is made on a semiconductor substrate. A first insulating layer is formed on the semiconductor substrate for use as a gate dielectric for a high voltage transistor in a first region of the semiconductor substrate. After the first insulating layer is formed, a second insulating layer is formed on the semiconductor substrate for use as a gate dielectric for a non-volatile memory transistor in a second region of the substrate. After the second insulating layer is formed, a third insulating layer is formed on the semiconductor substrate for use as a gate dielectric for a logic transistor in a third region of the substrate.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 19, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Rajesh A. Rao, Ramachandran Muralidhar
  • Patent number: 7816212
    Abstract: A high voltage operating field effect transistor has a substrate and a semiconductor channel formation region disposed in a surface of the substrate. A source region and a drain region are spaced apart from each other with the semiconductor channel formation region disposed between the source region and the drain region. A gate insulating film region is disposed on the semiconductor channel formation region. A resistive gate region is disposed on the gate insulating film region. A source side electrode is disposed on a source region side of the resistive gate region and is operative to receive a signal electric potential. A drain side electrode is disposed on a drain region side of the resistive gate region and is operative to receive a bias electric potential an absolute value of which is equal to or larger than that of a specified electric potential and which changes according to an increase or decrease in a drain electric potential.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: October 19, 2010
    Assignees: Seiko Instruments Inc.
    Inventors: Yutaka Hayashi, Hisashi Hasegawa, Yoshifumi Yoshida, Jun Osanai
  • Publication number: 20100261325
    Abstract: A method for manufacturing a semiconductor device having a dual gate insulation layer is presented. The method includes a step of forming a first insulation layer on a semiconductor substrate which has a first region and a second region. The method includes a step of selectively removing a portion of the first insulation layer formed the second region of the semiconductor substrate. The removal of the portion of the first insulation layer is conducted using an etching solution comprising propylene glycol, HF and amine. The method also includes a step of forming a second insulation layer on the first insulation layer in the first region and on the semiconductor substrate in the second region.
    Type: Application
    Filed: December 10, 2009
    Publication date: October 14, 2010
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Young Bang LEE
  • Publication number: 20100255668
    Abstract: Four regions (a narrow NMOS region, a wide NMOS region, a wide PMOS region, and a narrow PMOS region) are defined on a semiconductor substrate. Then, after a gate insulating film and a polysilicon film are sequentially formed on the semiconductor substrate, n-type impurities are introduced into the polysilicon film in the wide NMOS region. Next, by patterning the polysilicon film, gate electrodes are formed in the four regions. Then, n-type impurities are introduced into the gate electrodes in the narrow NMOS region and the wide NMOS region. As a result, an impurity concentration of the gate electrode in the narrow NMOS region becomes lower than that of the gate electrode in the wide NMOS region.
    Type: Application
    Filed: June 17, 2010
    Publication date: October 7, 2010
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Hiroshi NOMURA, Takashi Saiki, Tsunehisa Sakoda
  • Patent number: 7807537
    Abstract: After forming a silicon nitride film 14 on a silicon oxide film 12 covering one main surface of a semiconductor substrate 10 by a CVD method, argon ions Ar+ are doped to a part (where oxidation speed should be reduced) of the silicon nitride film 14 by an ion doping process using a resist layer as a mask in a condition of acceleration voltage at 100 keV and a dose amount of 5×1015 inos/cm2. Thereafter, by performing a thermal oxidation process to the silicon nitride film 14, a thin silicon oxide film 18a is formed in a non-ion doped part and a thick silicon oxide film 18b is formed in an ion doped part. This method for forming silicon oxide films can be applied to a method for manufacturing capacitors of a MOS type IC, etc. Moreover, a silicon oxynitride film can be used instead of the silicon nitride film.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: October 5, 2010
    Assignee: Yamaha Corporation
    Inventors: Yoshiko Harada, Naotada Ogura
  • Publication number: 20100244141
    Abstract: During the formation of sophisticated gate electrode structures, a replacement gate approach may be applied in which plasma assisted etch processes may be avoided. To this end, one of the gate electrode structures may receive an intermediate etch stop liner, which may allow the replacement of the placeholder material and the adjustment of the work function in a later manufacturing stage. The intermediate etch stop liner may not negatively affect the gate patterning sequence.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Inventors: Sven Beyer, Markus Lenski, Richard Carter, Klaus Hempel
  • Patent number: 7804141
    Abstract: A semiconductor element structure includes a first MOS having a first high-K material and a first metal for use in a first gate, a second MOS having a second high-K material and a second metal for use in a second gate and a bridge channel disposed in a recess connecting the first gate and the second gate for electrically connecting the first gate and the second gate, wherein the bridge channel is embedded in at least one of the first gate and the second gate.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 28, 2010
    Assignee: United Microelectronics Corp.
    Inventors: Tian-Fu Chiang, Li-Wei Cheng, Che-Hua Hsu, Chih-Hao Yu, Cheng-Hsien Chou, Chien-Ming Lai, Yi-Wen Chen, Chien-Ting Lin, Guang-Hwa Ma
  • Patent number: 7799625
    Abstract: An organic electro-luminescent display and a method of fabricating the same include an organic light emitting diode, a driving transistor which drives the organic light emitting diode, and a switching transistor which controls an operation of the driving transistor, wherein active layers of the switching and driving transistors are crystallized using silicides having different densities such that the active layer of the driving transistor has a larger grain size than the active layer of the switching layer.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji-sim Jung, Jong-man Kim, Jang-yeon Kwon, Kyung-bae Park
  • Patent number: 7799645
    Abstract: An embodiment of a semiconductor device includes a substrate including a cell region and a peripheral region; a cell gate pattern on the cell region; and a peripheral gate pattern on the peripheral region, wherein a first cell insulation layer, a second cell insulation layer, and a third cell insulation layer may be between the substrate and the cell gate pattern, a first peripheral insulation layer, a second peripheral insulation layer, and a third peripheral insulation layer may be between the substrate and the peripheral gate pattern, and the second cell insulation layer and the third cell insulation layer include the same material as the respective second peripheral insulation layer and third peripheral insulation layer.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: September 21, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jung-Dal Choi, Young-Woo Park, Jin-Taek Park, Chung-Il Hyun
  • Patent number: 7799644
    Abstract: A transistor having a source with higher resistance than its drain is optimal as a pull-up device in a storage circuit. The transistor has a source region having a source implant having a source resistance. The source region is not salicided. A control electrode region is adjacent the source region for controlling electrical conduction of the transistor. A drain region is adjacent the control electrode region and opposite the source region. The drain region has a drain implant that is salicided and has a drain resistance. The source resistance is more than the drain resistance because the source region having a physical property that differs from the drain region.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: September 21, 2010
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ted R. White, James D. Burnett, Brian A. Winstead
  • Publication number: 20100230749
    Abstract: A semiconductor device is provided and includes a substrate of a first conductivity type, a deep well of a second conductivity type, and a first high-side device. The deep well is formed on the substrate. The first high-side device is disposed within the deep well and includes an insulation layer of the second conductivity type, a well of the first conductivity type, first and second regions of the second conductivity type, and a first poly-silicon material. The insulation layer is formed on the substrate. The well is formed within the deep well. The first and second regions are formed within the well. The first poly-silicon material is disposed between the first region and the second region and on the deep well.
    Type: Application
    Filed: October 7, 2009
    Publication date: September 16, 2010
    Applicant: SYSTEM GENERAL CORPORATION
    Inventors: Hsin-Chih Chiang, Han-Chung Tai
  • Patent number: 7795156
    Abstract: Disclosed is a producing method of a semiconductor device comprising a step of forming a tunnel insulating film of a flash device comprising a first nitridation step of forming a first silicon oxynitride film by nitriding a silicon oxide film formed on a semiconductor silicon base by one of plasma nitridation and thermal nitridation, the plasma nitridation carrying out nitridation process by using a gas activated by plasma discharging a first gas including a first compound which has at least a nitrogen atom in a chemical formula thereof, and the thermal nitridation carrying out nitridation process using heat by using a second gas including a second compound which has at least a nitrogen atom in a chemical formula thereof, and a second nitridation step of forming a second silicon oxynitride film by nitriding the first silicon oxynitride film by the other of the plasma nitridation and the thermal nitridation.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: September 14, 2010
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Tadashi Terasaki, Akito Hirano, Masanori Nakayama, Unryu Ogawa
  • Patent number: 7795097
    Abstract: One aspect of the invention provides a semiconductor device that includes gate electrodes comprising a metal or metal alloy located over a semiconductor substrate, wherein the gate electrodes are free of spacer sidewalls. The device further includes source/drains having source/drain extensions associated therewith, located in the semiconductor substrate and adjacent each of the gate electrodes. A first pre-metal dielectric layer is located on the sidewalls of the gate electrodes and over the source/drains, and a second pre-metal dielectric layer is located on the first pre-metal dielectric layer. Contact plugs extend through the first and second pre-metal dielectric layers.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: September 14, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Michael F. Pas
  • Publication number: 20100227446
    Abstract: After silicon oxide film (9) is formed on the surface of a semiconductor substrate (1), the silicon oxide film (9) in a region in which a gate insulation film having a small effective thickness is formed is removed using diluted HF and after that, high dielectric constant insulation film (10) is formed on the semiconductor substrate (1). Consequently, two kinds of gate insulation films, namely, a gate insulation film (12) comprised of stacked film of high dielectric constant insulation film (10) and silicon oxide film (9) and gate insulation film (11) comprised of the high dielectric constant insulation film (10) are formed on the semiconductor substrate (1).
    Type: Application
    Filed: May 21, 2010
    Publication date: September 9, 2010
    Inventors: Satoshi SAKAI, Atsushi Hiraiwa, Satoshi Yamamoto
  • Patent number: 7790553
    Abstract: Methods for forming high performance gates in MOSFETs and structures thereof are disclosed. One embodiment includes a method including providing a substrate including a first short channel active region, a second short channel active region and a long channel active region, each active region separated from another by a shallow trench isolation (STI); and forming a field effect transistor (FET) with a polysilicon gate over the long channel active region, a first dual metal gate FET having a first work function adjusting material over the first short channel active region and a second dual metal gate FET having a second work function adjusting material over the second short channel active region, wherein the first and second work function adjusting materials are different.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: September 7, 2010
    Assignee: International Business Machines Corporation
    Inventors: Huilong Zhu, Xiaomeng Chen, Mahender Kumar, Brian J. Greene, Bachir Dirahoui, Jay W. Strane, Gregory G. Freeman
  • Patent number: 7791148
    Abstract: A semiconductor device includes a transistor region, a first guard ring, a second guard ring, and a silicide region. A first-conductive-type transistor is formed in the transistor region. The first guard ring is a second-conductive-type first impurity diffusion layer surrounding the transistor region with a first width, and is coupled to a first reference potential. The second guard ring is a first-conductive-type transistor second impurity diffusion layer surrounding the first guard ring with a second width. The silicide region is formed on the surface of the second guard ring such that substantially no silicide is formed on a portion of the surface of the second guard ring on the side facing a drain region of the first-conductive-type transistor, and is connected to a second reference potential line whose potential is higher than that of the first reference potential line.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: September 7, 2010
    Assignee: Oki Semiconductor Co., Ltd.
    Inventors: Katsuhiro Kato, Kenji Ichikawa
  • Patent number: 7790554
    Abstract: Provided is a manufacturing method of a semiconductor integrated circuit device having a plurality of first MISFETs in a first region and a plurality of second MISFETs in a second region, which comprises forming a first insulating film between two adjacent regions of the first MISFET forming regions in the first region and the second MISFET forming regions in the second region; forming a second insulating film over the surface of the semiconductor substrate between the first insulating films in each of the first and second regions; depositing a third insulating film over the second insulating film; forming a first conductive film over the third insulating film in the second region; forming, after removal of the third and second insulating films from the first region, a fourth insulating film over the surface of the semiconductor substrate in the first region; and forming a second conductive film over the fourth insulating film; wherein the third insulating film remains over the first insulating film in the se
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 7, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Hideki Yasuoka, Masami Kouketsu, Susumu Ishida, Kazunari Saitou
  • Patent number: 7790588
    Abstract: A dual gate of a semiconductor device includes a semiconductor substrate divided into a cell region with a recessed gate forming area and a peripheral region with PMOS and NMOS forming areas; first and second conductive type SiGe layers, the first conductive type SiGe layer being formed over the cell region and the PMOS forming area of the peripheral region, and the second conductive type SiGe layer being formed over the NMOS forming area of the peripheral region; first and second conductive type polysilicon layers, the first conductive type polysilicon layer being formed over the first conductive type SiGe layer and the second conductive type polysilicon layer being formed over the second conductive type SiGe layer; and a metallic layer and a hard mask layer stacked over the first and second conductive type polysilicon layers.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: September 7, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventor: Young Hoon Kim
  • Patent number: 7790544
    Abstract: An integrated circuit and gate oxide forming process are disclosed which provide a gate structure that is simple to integrate with conventional fabrication processes while providing different gate oxide thicknesses for different transistors within the integrated circuit. For a flash memory, which may utilize the invention, the different gate oxide thicknesses may be used for lower voltage transistors, memory array transistors, and higher voltage transistors.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: September 7, 2010
    Assignee: Micron Technology, Inc.
    Inventor: Xianfeng Zhou
  • Publication number: 20100221876
    Abstract: In semiconductor devices, and methods of formation thereof, both planar-type memory devices and vertically oriented thin body devices are formed on a common semiconductor layer. In a memory device, for example, it is desirable to have planar-type transistors in a peripheral region of the device, and vertically oriented thin body transistor devices in a cell region of the device. In this manner, the advantageous characteristics of each type of device can be applied to appropriate functions of the memory device.
    Type: Application
    Filed: April 5, 2010
    Publication date: September 2, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sung-Min Kim, Dong-Gun Park, Dong-Won Kim, Min-Sang Kim, Eun-jung Yun
  • Patent number: 7785970
    Abstract: Source and drain regions are formed in a first-type semiconductor device. Then, a high tensile stress capping layer is formed over the source and drain regions. A thermal process is then performed to re-crystallize the source and drain regions and to introduce tensile strain into the source and drain regions of the first-type semiconductor device. Afterwards, source and drain regions are formed in a second-type semiconductor device. Then, a high compressive stress capping layer is formed over the source and drain regions of the second-type semiconductor device. A thermal process is performed to re-crystallize the source and drain regions and to introduce compressive strain into the source and drain regions of the second-type semiconductor device.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: August 31, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Frank Scott Johnson, Shaofeng Yu
  • Patent number: 7785994
    Abstract: In the ion implantation method and semiconductor device manufacturing method relating to the present invention, a disc on which multiple semiconductor substrates are mounted is positioned in the manner that a first angle ?1 is made between an X-Y plane perpendicular to an ion beam and a line perpendicular to the Y-axis in a disc rotation plane. In this state, an ion beam is emitted to implant a first conductivity type impurity in the semiconductor substrates while the disc is rotated about a disc rotation axis. Then, the disc is positioned in the manner that a second angle ?2 is made between the X-Y plane and a line perpendicular to the Y-axis in the disc rotation plane. In this state, an ion beam is emitted to implant a second conductivity type impurity in the semiconductor substrates while the disc is rotated about the disc rotation axis.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: August 31, 2010
    Assignee: Panasonic Corporation
    Inventor: Hideki Okai
  • Patent number: 7781273
    Abstract: Disclosed are embodiments of a semiconductor structure with fins that are positioned on the same planar surface of a wafer and that have channel regions with different heights. In one embodiment the different channel region heights are accomplished by varying the overall heights of the different fins. In another embodiment the different channel region heights are accomplished by varying, not the overall heights of the different fins, but rather by varying the heights of a semiconductor layer within each of the fins. The disclosed semiconductor structure embodiments allow different multi-gate non-planar FETs (i.e., tri-gate or dual-gate FETs) with different effective channel widths to be formed of the same wafer and, thus, allows the beta ratio in devices that incorporate multiple FETs (e.g., static random access memory (SRAM) cells) to be selectively adjusted.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: August 24, 2010
    Assignee: International Business Machines Corporation
    Inventors: Dominic J. Schepis, Huilong Zhu
  • Patent number: 7781289
    Abstract: A non-volatile memory cell includes a program transistor and a control capacitor. A portion of a substrate associated with the program transistor is exposed to multiple implantations (such as DNW, HiNWell, HiPWell, and P-well implantations). Similarly, a portion of the substrate associated with the control capacitor is exposed to multiple implantations (such as DNW, HiNWell, HiPWell, P-well, and N-well implantations). These portions of the substrate may have faster oxidation rates than other portions of the substrate, allowing a thicker front-end gate oxide to be formed over these portions of the substrate. In addition, a rapid thermal process anneal can be performed, which may reduce defects in the front-end gate oxide and increase its quality without having much impact on the oxide over the other portions of the substrate.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: August 24, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Thanas Budri, Jiankang Bu
  • Patent number: 7781290
    Abstract: A complementary metal-oxide semiconductor (CMOS) device includes an NMOS thin body channel including a silicon epitaxial layer. An NMOS insulating layer is formed on a surface of the NMOS thin body channel and surrounds the NMOS thin body channel. An NMOS metal gate is formed on the NMOS insulating layer. The CMOS device further includes a p-channel metal-oxide semiconductor (PMOS) transistor including a PMOS thin body channel including a silicon epitaxial layer. A PMOS insulating layer is formed on a surface of and surrounds the PMOS thin body channel. A PMOS metal gate is formed on the PMOS insulating layer. The NMOS insulating layer includes a silicon oxide layer and the PMOS insulating layer includes an electron-trapping layer, the NMOS insulating layer includes a hole trapping dielectric layer and the PMOS insulating layer includes a silicon oxide layer, or the NMOS insulating layer includes a hole-trapping dielectric layer and the PMOS insulating layer includes an electron-trapping dielectric layer.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: August 24, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-young Lee, Sung-min Kim, Sung-dae Suk, Eun-jung Yun
  • Patent number: 7781288
    Abstract: A semiconductor structure, such as a CMOS structure, includes a gate electrode that has a laterally variable work function. The gate electrode that has the laterally variable work function may be formed using an angled ion implantation method or a sequential layering method. The gate electrode that has the laterally variable work function provides enhanced electrical performance within an undoped channel field effect transistor device.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: August 24, 2010
    Assignee: International Business Machines Corporation
    Inventors: Wilfried Haensch, Steven Koester, Amlan Majumdar
  • Patent number: 7776696
    Abstract: Making gates having multiple thicknesses on the same substrate in a given process flow is provided. For example, a method of making a semiconductor structure having at least two gates of different thickness involves forming a first gate layer having a first thickness; patterning a first hard mask over a portion of the first gate layer to define a first gate underneath the first hard mask having a first gate thickness; forming a second gate layer having a second thickness over the first gate layer and the first hard mask; patterning a second hard mask over a portion of the second gate layer to define a second gate underneath the second hard mask having a second gate thickness; removing portions of the first gate layer and the second gate layer that are not under the first hard mask and the second hard mask; and removing the first hard mask and the second hard mask to provide two gates of different thicknesses.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 17, 2010
    Assignee: Spansion LLC
    Inventors: Imran Khan, Ahmed Shibly, Dong-Hyuk Ju
  • Patent number: 7776761
    Abstract: A method of fabricating a semiconductor device is provided. The method includes preparing a semiconductor substrate having first and second regions, forming a mask layer pattern on the second region, growing an oxidation retarding layer on the first region and removing the mask layer pattern. The method further includes growing a silicon oxide layer on the semiconductor substrate to form gate insulating layers having different thicknesses from one another on the first and second regions.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: August 17, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chan-Sik Park
  • Patent number: 7776695
    Abstract: A method for making a semiconductor device structure, includes: providing a substrate; forming on the substrate a first gate with first spacers, a second gate with second spacers, respective source and drain regions of a same conductive type adjacent to the first gate and the second gate, an isolation region disposed intermediate of the first gate and the second gate, silicides on the first gate, the second gate and respective source and drain regions; forming additional spacers on the first spacers to produce an intermediate structure, and then disposing a stress layer over the entire intermediate structure.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: August 17, 2010
    Assignee: International Business Machines Corporation
    Inventors: John C. Arnold, Dureseti Chidambarrao, Ying Li, Rajeev Malik, Shreesh Narasimha, Siddhartha Panda, Brian L. Tessier, Richard Wise
  • Publication number: 20100200930
    Abstract: An improvement is provided in a manufacturing yield of a semiconductor device including transistors in which gate insulating films have different thicknesses. After a high-breakdown-voltage insulating film is formed over a silicon substrate, a surface of the high-breakdown-voltage insulating film is abraded for a reduction in the thickness thereof so that a middle-breakdown-voltage insulating film is formed to be adjacent to the high-breakdown-voltage insulating film. The high-breakdown-voltage insulating film is formed by a thermal oxidation method so as to extend from an inside of the main surface of the silicon substrate to an outside thereof. The middle-breakdown-voltage insulating film is formed so as to be thinner than the high-breakdown-voltage insulating film.
    Type: Application
    Filed: January 13, 2010
    Publication date: August 12, 2010
    Inventors: Yasuhiro FUJII, Kazumasa YONEKURA, Tatsunori KANEOKA
  • Patent number: 7772070
    Abstract: A semiconductor integrated circuit device according to an embodiment of the present invention includes a functional circuit region including a functional circuit, a dummy region formed in a region other than the functional circuit region, and plural dummy MOSFETs formed in a dummy region and having a dummy gate electrode on a dummy diffusion layer, the plural dummy MOSFETs being arranged such that date rates of the dummy diffusion layer and dummy gate electrode are kept constant in a predetermined section.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: August 10, 2010
    Assignee: NEC Electronics Corporation
    Inventors: Hiroyasu Kitajima, Hiroshi Furuta, Toshikatsu Jinbo
  • Patent number: 7772646
    Abstract: There is a method of manufacturing a semiconductor device with a semiconductor body comprising a semiconductor substrate and a semiconductor region which are separated from each other with an electrically insulating layer which includes a first and a second sub-layer which, viewed in projection, are adjacent to one another, wherein the first sub-layer has a smaller thickness than the second sub-layer, and wherein, in a first sub-region of the semiconductor region lying above the first sub-layer, at least one digital semiconductor element is formed and, in a second sub-region of the semiconductor region lying above the second sub-layer, at least one analog semiconductor element is formed. According to an example embodiment, the second sub-layer is formed in that the lower border thereof is recessed in the semiconductor body in relation to the lower border of the first sub-layer Fully depleted SOI devices are thus formed.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: August 10, 2010
    Assignee: NXP B.V.
    Inventors: Josine Johanna Gerarda Petra Loo, Vincent Charles Venezia, Youri Ponomarev
  • Publication number: 20100193872
    Abstract: The work function of a high-k gate electrode structure may be adjusted in a late manufacturing stage on the basis of a lanthanum species in an N-channel transistor, thereby obtaining the desired high work function in combination with a typical conductive barrier material, such as titanium nitride. For this purpose, in some illustrative embodiments, the lanthanum species may be formed directly on the previously provided metal-containing electrode material, while an efficient barrier material may be provided in the P-channel transistor, thereby avoiding undue interaction of the lanthanum species in the P-channel transistor.
    Type: Application
    Filed: January 21, 2010
    Publication date: August 5, 2010
    Inventors: Richard Carter, Sven Beyer, Joachim Metzger, Robert Binder
  • Publication number: 20100197094
    Abstract: Provided are a FinFET and a method of manufacturing the same. A FinFET may include at least one active fin, at least one gate insulating layer pattern, a first electrode pattern, a second electrode pattern and at least one pair of source/drain expansion regions. The at least one active fin may be formed on a substrate. The at least one gate insulating layer pattern may be formed on the at least one active fin. The first electrode pattern may be formed on the at least one gate insulating layer pattern. Further, the first electrode pattern may be intersected with the at least one active fin. The second electrode pattern may be formed on the first electrode pattern. Further, the second electrode pattern may have a width greater than that of the first electrode pattern. The at least one pair of source/drain expansion regions may be formed on a surface of the at least one active fin on both sides of the first electrode pattern. Thus, the FinFET may have improved capacity and reduced GIDL current.
    Type: Application
    Filed: March 30, 2010
    Publication date: August 5, 2010
    Inventors: Sung-Min Kim, Min-Sang Kim, Ji-Myoung Lee, Dong-Won Kim
  • Publication number: 20100193878
    Abstract: A semiconductor device 100 has N-well regions 18 holding PMOS devices 110, 112 and P-type regions 14 holding NMOS devices 114, 116. Devices 110 and 114 have high thresholds and devices 112 and 116 have low thresholds. The PMOS devices are junction isolated from the substrate 10 by the N-well 18 and the NMOS devices are isolated from the substrate by the N-type layer 13. Field oxide regions 20 laterally isolate the PMOS from the NMOS devices. The high threshold CMOS devices 110, 114 connect the low threshold CMOS devices to opposite rails Vdd and Vss. A control terminal 121 turns the high threshold devices on to let the low threshold devices switch rapidly. In stand-by mode, the high threshold devices are off and there is very low leakage current.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 5, 2010
    Inventor: Jun Cai
  • Publication number: 20100193866
    Abstract: In sophisticated semiconductor devices, an asymmetric transistor configuration may be obtained on the basis of an asymmetric well implantation while avoiding a tilted implantation process. For this purpose, a graded implantation mask may be formed, such as a graded resist mask, which may have a higher ion blocking capability at the drain side compared to the source side of the asymmetric transistor. For instance, the asymmetric configuration may be obtained on the basis of a non-tilted implantation process with a high degree of performance gain and may be accomplished irrespective of the technology standard under consideration.
    Type: Application
    Filed: January 25, 2010
    Publication date: August 5, 2010
    Inventors: G Robert Mulfinger, Andy Wei, Jan Hoentschel, Vassilios Papageorgiou
  • Patent number: 7768076
    Abstract: A semiconductor device has an n-channel MISFET having first diffusion layers formed in a first region of a surface portion of a semiconductor substrate so as to sandwich a first channel region therebetween, a first gate insulating film formed on the first channel region, and a first gate electrode including a first metal layer formed on the first gate insulating film, and a first n-type polysilicon film formed on the first metal layer, and a p-channel MISFET having second diffusion layers containing boron as a dopant and formed in a second region of the surface portion of the semiconductor substrate so as to sandwich a second channel region therebetween, a second gate insulating film formed on the second channel region, and a second gate electrode including a second metal layer containing nitrogen or carbon and formed on the second gate insulating film and a second n-type polysilicon film formed on the second metal layer and having a boron concentration of not more than 5×1019 cm?3 in a portion adjacent an in
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: August 3, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kazuaki Nakajima
  • Patent number: 7768137
    Abstract: A semiconductor chip includes flip chip contacts that are arranged on contact surfaces of an active top side of the semiconductor chip. The contact surfaces are surrounded by a passivation layer that covers the active top side while leaving exposed the contact surfaces. The passivation layer includes thickened portions that surround the contact surfaces. The semiconductor chip formed with thickened portions around the contact surfaces is protected from delamination during packaging of the semiconductor chip to form a semiconductor device.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: August 3, 2010
    Assignee: Infineon Technologies AG
    Inventors: Gerald Ofner, Ai Min Tan, Mary Teo
  • Patent number: 7767577
    Abstract: A processing layer, such as silicon, is formed on a metal silicide contact followed by a metal layer. The silicon and metal layers are annealed to increase the thickness of the metal silicide contact. By selectively increasing the thickness of silicide contacts, Rs of transistors in iso and nested regions can be matched.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: August 3, 2010
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Johnny Widodo, Liang Choo Hsia, James Yong Meng Lee, Wen Zhi Gao, Zhao Lun, Huang Liu, Chung Woh Lai, Shailendra Mishra, Yew Tuck Chow, Fang Chen, Shiang Yang Ong
  • Publication number: 20100187639
    Abstract: A semiconductor device has a semiconductor substrate in which first and second wells are formed. The substrate and wells are of the same conductivity type, but the second well has a higher impurity concentration than the first well. High-voltage MOS transistors are formed in the first well, and a low-voltage MOS transistor is formed in the second well. The high-voltage MOS transistors include a first transistor having a gate oxide layer with a first thickness and a second transistor having a gate oxide layer with a second thickness less than the first thickness. The low-voltage MOS transistor has a third gate oxide layer with a third thickness less than the first thickness. The second high-voltage MOS transistor provides efficient current conduction.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 29, 2010
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventor: Kazushige Iwamoto
  • Publication number: 20100190308
    Abstract: An electronic device can include an insulating layer and a fin-type transistor structure. The fin-type structure can have a semiconductor fin and a gate electrode spaced apart from each other. A dielectric layer and a spacer structure can lie between the semiconductor fin and the gate electrode. The semiconductor fin can include channel region including a portion associated with a relatively higher VT lying between a portion associated with a relatively lower VT and the insulating layer. In one embodiment, the supply voltage is lower than the relatively higher VT of the channel region. A process for forming the electronic device is also disclosed.
    Type: Application
    Filed: April 2, 2010
    Publication date: July 29, 2010
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Marius K. Orlowski, James D. Burnett
  • Patent number: 7763517
    Abstract: A method of forming a non-volatile memory cell is provided. The method comprises: (a) providing a substrate; (b) forming a stacking structure on the substrate, the stacking structure at least comprising an oxide-nitride-oxide layer (ONO layer) and a polysilicon layer thereon; (c) patterning the stacking structure to form a plurality of separated stacking units, each two stacking units having an aperture therebetween; (d) forming a source region and a drain region buried in the substrate at two sides of the each stacking unit; (e) forming an oxide layer in the aperture and over the stacking units; and (f) performing a chemical mechanical polishing (CMP) process to remove the oxide layer over the stacking units and outside the aperture.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: July 27, 2010
    Assignee: Macronix International Co., Ltd.
    Inventors: Chin-Tsan Yeh, Chih-Hsien Lo, Chin-Ta Su, Kuang-Chao Chen